package me.chan.netty.basic;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import lombok.extern.slf4j.Slf4j;

@Slf4j
public class EventLoopServer {

    public static void main(String[] args) throws InterruptedException {

        new ServerBootstrap()
                .group(new NioEventLoopGroup(), new NioEventLoopGroup())
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<NioSocketChannel>() {
                    @Override
                    protected void initChannel(NioSocketChannel socketChannel) {
                        socketChannel.pipeline().addLast(new ChannelInboundHandlerAdapter(){
                                    @Override
                                    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                        ByteBuf buf = msg instanceof ByteBuf? (ByteBuf) msg : null;
                                        if (buf != null) {
                                            byte[] buffer = new byte[16];
                                            buf.readBytes(buffer, 0 , buf.readableBytes());
                                            log.info("data from client: {}", new String(buffer));
                                        }
                                    }
                                });
                    }
                }).bind(8080).sync();
    }
}
